An apparently first-order transition between two amorphous phases of ice induced by pressure

@article{Mishima1985AnAF,
  title={An apparently first-order transition between two amorphous phases of ice induced by pressure},
  author={Osamu Mishima and L. D. Calvert and Edward Whalley},
  journal={Nature},
  year={1985},
  volume={314},
  pages={76-78}
}
We recently reported1 a transition from ice Ih to a high-density amorphous phase at 10 kbar, 77 K. Here we report that low-density amorphous ice (density 0.94 g cm−3) compressed at 77 K transforms to high-density amorphous ice (1.19 g cm−3 at zero pressure) at a sharp transition at 6±0.5 kbar. The transition is at least as sharp as the previously reported1 transition and strongly resembles a first-order transition in its sharpness and large volume change. It appears to be the first example of… CONTINUE READING

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